Description

NUC18D VER1.0 Ultra-Compact Industrial Motherboard

A remarkably compact and fanless 120mm x 120mm motherboard based on Intel® Bay Trail architecture. Designed for space-constrained, silent, and rugged applications with essential I/O, flexible power modes, and industrial-grade reliability for IoT gateways, compact HMIs, and embedded controllers.

📋 Product Overview

The NUC18D VER1.0 is an ultra-compact computing solution that delivers reliable performance in a minimal footprint. Utilizing the energy-efficient Intel® Celeron J1900 quad-core processor, this fully fanless board is engineered for silent operation and dust-proof enclosures. Despite its small size, it offers a practical set of features including dual display outputs, dual LAN, wireless expansion, and essential industrial interfaces like COM and GPIO. Its AT/ATX power mode switching and wide-temperature operation make it an ideal, cost-effective choice for embedded systems where size, silence, and reliability are paramount.

🛠️ Key Features

✓Ultra-Compact Form Factor: Extremely small 120mm x 120mm PCB, ideal for deeply embedded and space-limited applications.

✓True Fanless, Silent Design: Fully passive cooling enables completely silent operation and allows for sealed, dust-proof enclosures.

✓Efficient Quad-Core Processing: Integrated Intel® Celeron J1900 processor provides balanced performance for lightweight computing tasks.

✓Essential Connectivity: Features dual Gigabit LAN, dual display outputs (VGA+HDMI), 6 USB ports, and 2 COM ports (with RS485 support).

✓Flexible Expansion & Storage: Mini-PCIe slot for Wi-Fi/4G modules and both mSATA and SATA 2.0 interfaces for storage flexibility.

✓Industrial Control Ready: Includes GPIO, hardware watchdog timer, and AT/ATX power mode switching for integration into control systems.

✓Rugged & Reliable: Wide-temperature operation (-10°C to +60°C) and robust design for challenging environments.

🔧 Core System Specifications

CPU

Integrated Intel® Celeron J1900 Quad-Core Processor @ 2.0GHz. Compatible with Intel® Bay Trail-I/M/D series CPUs.

Memory (DDR3L)

1 x SO-DIMM slot, supports DDR3L 1333/1600 MHz, up to 8GB (Single Channel, 1.35V)

Storage

1 x mSATA slot
1 x SATA 2.0 interface (for 2.5″ HDD/SSD)

Operating System

Windows 7, Windows 10, Linux

Graphics

Integrated Intel® HD Graphics (Bay Trail)

🎥 Display & Audio Interfaces

Display Outputs

1 x VGA
1 x HDMI
1 x LVDS interface

Audio Codec

Realtek ALC262/662/897 HD Audio

Audio Ports/Headers

1 x Front Panel Audio Header (2×5 pin, supports MIC/Line-out)
1 x Line Out (Green 3.5mm jack)
1 x Microphone In (Pink 3.5mm jack)
1 x Amplifier Header (1×4 pin)

🔌 Connectivity & I/O Ports

USB Ports

1 x USB 3.0 port
5 x USB 2.0 ports (Total: 6 USB ports)

Network (LAN)

2 x Gigabit Ethernet (RJ45, 10/100/1000 Mbps)
(Optional single LAN configuration available)

Serial Ports (COM)

2 x RS232 Serial Ports
(COM1 supports a special “CISCO” style connector; 1 port can be configured as RS485)

Expansion Slots

1 x Mini-PCIe slot (for Wi-Fi / 4G modules)

Fan Interface

1 x 4-pin CPU fan header (reserved; board is designed for fanless operation with integrated heatsink)

GPIO

Supports 4-channel input & 4-channel output GPIO

Watchdog Timer

Hardware reset function (256 levels, 0~255 seconds)

⚡ Power & Physical Specifications

Input Voltage

DC 12V ±5%

Power Mode

Supports AT/ATX mode switching (configurable via jumper or BIOS)

Cooling System

Fully passive fanless design with integrated heatsink (ensures silent, reliable, and maintenance-free operation)

Form Factor

Ultra-Compact: 120mm × 120mm

🌎 Environmental & Reliability

Operating Temperature

-10°C to +60°C (Wide-temperature operation)

Storage Temperature

-20°C to +70°C

Operating Humidity

5% to 95% RH (non-condensing)

⚠️ Important Notes

Ultra-Compact Size & Application: The 120mm x 120mm size is significantly smaller than standard Mini-ITX. This board is designed for specialized ultra-compact enclosures and deeply embedded applications where space is the primary constraint. Ensure your chassis and mounting solution are compatible.

Fanless Thermal Management: This board is designed for completely fanless operation. The final system enclosure must provide adequate passive thermal dissipation to maintain stable operation, especially near the upper end of the temperature range. Do not obstruct the integrated heatsink.

CPU & Memory Specifications: Features an integrated Intel® Bay Trail generation Celeron J1900 CPU. Supports DDR3L SO-DIMM memory only (1.35V). Standard DDR3 (1.5V) modules are not compatible.

Special COM Port Connector: COM1 uses a non-standard “CISCO” style connector (not a standard DB9). Ensure you have the correct cable or adapter for your serial device connection.

Power Mode & Supply: Use a stable DC 12V ±5% power adapter. The AT/ATX mode must be correctly configured (via jumper/BIOS) for proper system power-on and soft-off functionality.

Performance Consideration: The Intel Celeron J1900 is an older, low-power platform. It is suitable for lightweight computing, basic control, and display tasks but not for CPU-intensive applications. Choose accordingly based on your performance requirements.